Ignition device for explosive-engines.



PATENTED MAY 28, 1907.

J. STADTHERR. IGNITION DEVICE EUR EXPLOSIVE ENGINES.

APPLICATION FILED PEB. 8. 1907.

NMN

' /NVENTOH W/TNESSES k W62@ moe/ver To all whom it 'may concern/r f -i -Usrrnnfsrnrns v Be it known that .,I, JonNSTADTHnRR, a citizen of the United States residing at Gibbon, in t'he county oSibl'ey and State of Minnesota,`` have invented certain vnew 'and useful Improvements 1n I mtlon Devicesfor vExplosi,ve-Engines, 'of which .tlefollowing is a specification, 'reference being had vto the accompanying drawings.

- My invention'relates,toimprovements in ignition devices for explosive engines; vand an object o'myfi'nvention is torovidea device of this characterwhich wi be selfcleaning, maintaining the surfacesof Contact free at all times Ifrom soot, rust,l burnt carbon, scale 1 'and other foreign substances.

Another. object of my invention is toV proi vide'means for controlling the travel of one'of' the electrodes with a view to time of explosion. l A

A vfurther object 'of my invention is to romy new device Fig. 2 isa vsectional detail' showing the electrodes dining contact; and

Fig. 3 is a detail showing the .position of the electrodes at the instant ofsparking.`

In one end ol'ithe explosion chamber :or cylinder a and insulated;thereromis'nount7 ed an electrode cylinder. l in which is pivot u ally mounted at c the oscillating electrode d.' Through the stuffing-box cf'passes' a rodfthe lower. 'end of which is connected lWith the oscillatingelectrod @and the upper end of which is threaded. 'Upon -Ythe p screwed'the adjusting nut g and the lock-nut 7L. Between the nut gandthe stuffing box ke is interposed a coil spring c. p

The slidable electrode y' enters the explosion chamiber from the oppositeend thereof and passes through the stuiing-box between which and a collar m on the electrode is mounted a coil s ring' n. One olf,- of the attery is connected with the-wa s or casing of the electrode chamber l) by means of a binding post or screw o, While x specinca'tiqn of Letters 15a/nent, Appii'caion ned February 8,1907.` sannita-356,897@

the other regulating the' vide-a device of this'character which wi be Patented may as',A 11967;'

Vole is connected with` the casing ofthe expl) bindi postp.`

Wbi e the engine mechanism is not 'shown herein, it will be. understood by all skilledin" this artthat' the slidable electrode forced into the explosion chamber against the tenism controlled bythe engine shaft'.

` The slidable electrode j isshown in Fig.. 1

sion of the ycoil spring Toby suitable mechan-` l .60.

as vat the beginning of its inward stroke. As i "it continues .to move inwardly, its f chiselv shaped 'end g slidingly engages'the chisel-l shaped end g of the 'oscillating electrode d,

swinging the 4latter downwardly u on its pivot c against the tension of the coi spring t and scrapingfrom the surfaces of Contact all foreignv matten'which insures small lelectrical resistance and a fullcurrent. Fig 2 its inward travel. l l

Undertheinfluence ofthe coil s ring n the slidable electrode j moves outwar ly,'during which movement the coil springt holds the chisel-shaped ends g, g in scraping contact, Fig'.- v3 4shows the position of the electrode.

ends at'break or theinstant 'of sparkingl This instant is determined by `the adjust` ment of the lscrew r, which is held in place by the lock-nut s' and which controls the travel -of the oscillating electrode d in anupward osion chamber ai" by means of the 7o'A shows the slidable electrode at the limit of l* direction. 'By screwing the screw r into the f electrodechamber b, the time' of contact will be prolonged and the instant of sparking will be delayed.vr It willbe evident toV all skilled injthis art that the screw r is readily accessible .to the' engineer at all times and furnishes a ing electrode d in such a position that it will trode y.-

f The chisel-shaped ends of the electrodesvv 'serve to insure a full centact until `the mo?.`

ment of break and thereby a current of' eat sults in pronounced arcingk I claim:

In a devies of the Character described, the' timesbe engaged bythe slidable elec-l u ick andiready means of adjustment.'t Furft er, thescrew 7" serves' to keep the. oscillatcombination of a spring-controlled electrode mounted free to oscillate ;V a slidable electrode 4 intensity, which at the instant ofbrea re'- which oo-opeates therewith; an explosonf my vhemd at said Gibbon this fth day of cylinder into which the ends of seid electrodes February, A. D 1907, in the presence of the project; and means operable hom outside two'undersgned Witnesses. said cylinder to limit the trevelof said os- JOHN STADT HERR. 5 cillatory electrode, and thereby to control Witnesses: the time of ignition. s A. E. FENSKE,

Intestmony whereof I have hereunto set l ALBERT L. YOUNG. 

